The Estop should ideally be wired to an emergency relay, that will cut off the AC going to the 48V power supply and also the VFD.
It will also send a signal to the Bob that the Estop has been activated.

Connecting the Estop to the BOB and having your software control the Estop is a no no.

Quote Originally Posted by mturneruk View Post
Thanks Jazz

I am after simple and safe!
I understand how to wire the steppers. Just not 100% on the e-stop, additional fuses you mentioned or grounding.

2 x chassis power connectors (plugging into 2 plugs).
1 x EMI Filter on VFD Supply.
1 x VFD

1 x 48v Power supply
4 x stepper drivers
1 x UC300 USb motion controller
1 x KK01 Breakout board

1 x Estop
2 x 48v Fans

That's it.